package com.xuekairui.invite.controller;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.xuekairui.common.Result;
import com.xuekairui.invite.dto.InviteConfigRequest;
import com.xuekairui.invite.dto.InviteConversionStatsResponse;
import com.xuekairui.invite.dto.InviteRewardResponse;
import com.xuekairui.invite.dto.QuotaGrantRequest;
import com.xuekairui.invite.entity.InviteConfig;
import com.xuekairui.invite.service.InviteConfigService;
import com.xuekairui.invite.service.InviteService;
import com.xuekairui.user.dto.CrawlerUserDetailResponse;
import com.xuekairui.user.entity.CrawlerQuotaGrant;
import com.xuekairui.user.enums.OperationType;
import com.xuekairui.user.service.OperationAuditLogService;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.validation.Valid;
import lombok.RequiredArgsConstructor;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * 运营管理接口 - 邀请配置与爬虫次数发放
 * 前缀: /api/admin
 */
@RestController
@RequestMapping("/api/admin")
@RequiredArgsConstructor
public class AdminController {

    private final InviteConfigService inviteConfigService;
    private final InviteService inviteService;
    private final OperationAuditLogService auditLogService;

    // ==================== 邀请配置管理 ====================

    /**
     * 获取当前生效的邀请配置
     * GET /api/admin/invite/config
     */
    @GetMapping("/invite/config")
    public Result<InviteConfig> getInviteConfig() {
        return Result.success(inviteConfigService.getActiveConfig());
    }

    /**
     * 更新当前生效的邀请配置（无则自动创建）
     * PUT /api/admin/invite/config
     */
    @PutMapping("/invite/config")
    public Result<InviteConfig> updateInviteConfig(@Valid @RequestBody InviteConfigRequest request,
                                                    HttpServletRequest httpRequest) {
        Long operatorId = (Long) httpRequest.getAttribute("userId");
        String operatorRole = getOperatorRole(httpRequest);
        InviteConfig result = inviteConfigService.updateConfig(request);
        auditLogService.logSuccess(operatorId != null ? operatorId : 0L, "管理员", operatorRole,
                OperationType.INVITE_CONFIG_UPDATE, "INVITE_CONFIG", result.getId());
        return Result.success(result);
    }

    /**
     * 分页获取邀请配置列表
     * GET /api/admin/invite/configs?page=1&size=20
     */
    @GetMapping("/invite/configs")
    public Result<Page<InviteConfig>> listInviteConfigs(
            @RequestParam(defaultValue = "1") Integer page,
            @RequestParam(defaultValue = "20") Integer size) {
        return Result.success(inviteConfigService.listConfigs(page, size));
    }

    /**
     * 根据ID获取邀请配置
     * GET /api/admin/invite/config/{id}
     */
    @GetMapping("/invite/config/{id}")
    public Result<InviteConfig> getInviteConfigById(@PathVariable Long id) {
        return Result.success(inviteConfigService.getById(id));
    }

    /**
     * 创建新的邀请配置
     * POST /api/admin/invite/config
     */
    @PostMapping("/invite/config")
    public Result<InviteConfig> createInviteConfig(@Valid @RequestBody InviteConfigRequest request,
                                                    HttpServletRequest httpRequest) {
        Long operatorId = (Long) httpRequest.getAttribute("userId");
        String operatorRole = getOperatorRole(httpRequest);
        InviteConfig result = inviteConfigService.createConfig(request);
        auditLogService.logSuccess(operatorId != null ? operatorId : 0L, "管理员", operatorRole,
                OperationType.INVITE_CONFIG_UPDATE, "INVITE_CONFIG_CREATE", result.getId());
        return Result.success(result);
    }

    /**
     * 更新指定ID的邀请配置
     * PUT /api/admin/invite/config/{id}
     */
    @PutMapping("/invite/config/{id}")
    public Result<InviteConfig> updateInviteConfigById(@PathVariable Long id,
                                                        @Valid @RequestBody InviteConfigRequest request,
                                                        HttpServletRequest httpRequest) {
        Long operatorId = (Long) httpRequest.getAttribute("userId");
        String operatorRole = getOperatorRole(httpRequest);
        InviteConfig result = inviteConfigService.updateConfig(id, request);
        auditLogService.logSuccess(operatorId != null ? operatorId : 0L, "管理员", operatorRole,
                OperationType.INVITE_CONFIG_UPDATE, "INVITE_CONFIG_UPDATE:" + id, id);
        return Result.success(result);
    }

    /**
     * 删除邀请配置
     * DELETE /api/admin/invite/config/{id}
     */
    @DeleteMapping("/invite/config/{id}")
    public Result<Void> deleteInviteConfig(@PathVariable Long id,
                                            HttpServletRequest httpRequest) {
        Long operatorId = (Long) httpRequest.getAttribute("userId");
        String operatorRole = getOperatorRole(httpRequest);
        inviteConfigService.deleteConfig(id);
        auditLogService.logSuccess(operatorId != null ? operatorId : 0L, "管理员", operatorRole,
                OperationType.INVITE_CONFIG_UPDATE, "INVITE_CONFIG_DELETE:" + id, id);
        return Result.success();
    }

    // ==================== 爬虫次数手动发放 ====================

    /**
     * 运营手动给用户发放爬虫次数
     * POST /api/admin/crawler/grant
     */
    @PostMapping("/crawler/grant")
    public Result<CrawlerQuotaGrant> grantCrawlerQuota(@Valid @RequestBody QuotaGrantRequest request,
                                                        HttpServletRequest httpRequest) {
        Long operatorId = (Long) httpRequest.getAttribute("userId");
        String operatorRole = getOperatorRole(httpRequest);
        CrawlerQuotaGrant grant = inviteService.adminGrantQuota(request);
        auditLogService.logSuccess(operatorId != null ? operatorId : 0L, "管理员", operatorRole,
                OperationType.CRAWLER_QUOTA_GRANT, "CRAWLER_QUOTA:" + request.getUserId(), request.getUserId());
        return Result.success(grant);
    }

    /**
     * 查看发放记录
     * GET /api/admin/crawler/grants?userId=1&grantType=ADMIN
     */
    @GetMapping("/crawler/grants")
    public Result<List<com.xuekairui.user.dto.CrawlerQuotaGrantResponse>> listGrants(
            @RequestParam(required = false) Long userId,
            @RequestParam(required = false) String grantType) {
        return Result.success(inviteService.listGrants(userId, grantType));
    }

    // ==================== 邀请记录查看 ====================

    /**
     * 查看某用户的邀请奖励记录
     * GET /api/admin/invite/rewards?userId=1
     */
    @GetMapping("/invite/rewards")
    public Result<List<InviteRewardResponse>> listInviteRewards(
            @RequestParam(required = false) Long userId) {
        // 如果指定了userId，查看该用户的邀请记录；否则返回空（可扩展为全部）
        if (userId != null) {
            return Result.success(inviteService.getInviteRewards(userId));
        }
        return Result.success(List.of());
    }

    // ==================== 用户爬虫详情查询 ====================

    /**
     * 查看用户爬虫使用详情（含平台分布）
     * GET /api/admin/crawler/user-detail?userId=1
     */
    @GetMapping("/crawler/user-detail")
    public Result<CrawlerUserDetailResponse> getCrawlerUserDetail(@RequestParam Long userId) {
        return Result.success(inviteService.getCrawlerUserDetail(userId));
    }

    /**
     * 查看用户邀请转化统计（点击-注册转化率）
     * GET /api/admin/invite/conversion-stats?userId=1
     */
    @GetMapping("/invite/conversion-stats")
    public Result<InviteConversionStatsResponse> getInviteConversionStats(@RequestParam Long userId) {
        return Result.success(inviteService.getInviteConversionStats(userId));
    }

    private String getOperatorRole(HttpServletRequest request) {
        String role = (String) request.getAttribute("role");
        return role != null ? role : "ADMIN";
    }
}